Abstract
With the increasing frequency of neuroimaging, incidental intramedullary cavities are diagnosed more frequently. We present a case of asymptomatic incidental intramedullary cervical cavity diagnosed as an idiopathic syringomyelia as initial magnetic resonance imaging (MRI) showed an isolated cystic image without contrasted component. The patient had no subsequent MRI follow-up, but eventually showed symptoms 8 years later. By this stage of the disease, the MRI appearance had changed, showing a solid and enhanced component. The patient underwent surgical resection and histopathology concluded a papillary ependymoma (grade 2). This case illustrates how asymptomatic intramedullary cavities may hide an underlying tumoral process and why these cavities should not be considered as idiopathic syringomyelia by default, except after prolonged MRI follow-up.
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